Vivanbhatena,
I also have one of the elusive 1G-GTE engines, and as far as power goes it's
pretty much how deep your pockets are.
On stock engine internals, you can push around 350-400HP SAFELY. The
inline six are notoriously tough engines since there are little opposing forces
flying around. Have you noticed your car shake at idle? Nope, it feels like it's
shut off. Vibrations are what kill a engine, (high RPM's) which is why the 1G
and the 1JZ work so well.
To answer your questions though;
"i think if i can get her up to 300 without getting my fuel consumption tooooo out of control i could hammer these posers...where should i start ???"
Fuel consumption gets terrible
only when you activate the turbo's. Even
with +500HP engines (like my old Chevy 350) you only consume more gas
when there is more air introduced in the system. Drive nice, and you'll be good
to go. (Except for the occasional Skoda spanking... >
)
Start upgrading essential things first. These being exhaust, CAI (Cold Air
Intake), and if you want to be safe about it, brakes and suspension parts.
These first couple of things won't gain you much in the way of HP, but it
gives you the basis for all other upgrades. Then you'll want to move to things
like boost controller, fuel controller/cutoff controller, bigger injectors, high
flow fuel pump, larger MAF (or AFM conversion if that's what you have). As
you gain higher HP, the greater the need for A/F control becomes. Expect to
shell out $2000+ just for electronics.
Wish I had better news...
"the car is bloody heavy (stock)"
Absolutely. I'm assuming you bought this car to have fun with, not as a family
vehicle, aye? If so, then there are several Topics here on the forum and other
forums that address the issue of weight. Most of these mods include taking
out the backseat, spare tire, and replacing certain components with lighter
materials like carbon fiber.
As for parts suppliers actually IN India, I would have no clue. Spare parts are
not rare, but take a bit of research to find.
Maintenance!?!? Good god man, this is a TOYOTA you're driving!!
These
bloody things last forever.
Anyways, hope that's enough info.
Cheers,
-=Littlestan=-